Asymmetric Encryption

Asymmetric encryption uses a public/private key pair for encryption and identity.

Updated: 2026-03-05

Definition

Asymmetric cryptography uses a key pair: a public key and a private key.

It enables secure key exchange, digital signatures, and certificate-based identity in PKI.

Key points

Key pair: public + private
Used in TLS handshake and signatures
Slower than symmetric encryption

Common mistakes

Trying to encrypt large data directly with asymmetric crypto (inefficient).
Not protecting private keys properly.

Related exams

CompTIA Security+ (SY0-701)

Free Security+ SY0-701 mini test. Continue in the app for offline packs and detailed explanations.

Microsoft Azure Fundamentals (AZ-900)

Free AZ-900 mini test. Continue in the app for offline packs and detailed explanations.

Related terms

Want to practice this in exam-style questions?

Use the mini tests on each exam page, then continue in the app for offline packs and detailed explanations.